Jana, Bidyut Kumar, and Sobhan Kumar Mukherjee. “Cypselar Anatomy of Five Species of the Tribe Calenduleae, Family Asteraceae”. Journal of Bangladesh Academy of Sciences 39, no. 1 (June 14, 2015): 65–71. Accessed July 17, 2024. https://banglajol.info/index.php/JBAS/article/view/23660.